Valve for blowing-engines, &amp;c.



L IVER SEN.

VALVE FOR BLOWING ENGINES M.

APPLICATION FILED FEB. 18. 1914.

Pa-tented Oct. 17,1916.

3 SHEETS-SHEET 1.

INVENTOR L.TVERSEN. VALVE-FORBLOWING ENGINES, &c.

APPLICATION FILED FEB. 18. 1914.

Pa t-ented 0%.17, 1916.

3 SHEETS-SHEET 2.'

WITNESSES INVENTOR LIVERSEN.

VALVE FOR BLOWING ENGINES, 6w. APPLICATION FILED FEB. 18. I914.

1,201,826. Patented Oct. 17,1916.

3 SHEETS-SHEET 3.

mesa.

INVENTOR To all whom it may concern;

Be it; known that I, LORENZ IvERsEN, a citizen of the United States, and a resident of West Homestead, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Valves for Blowing-Engines,&c., of which the following. i s a specification.

This invention relates to valves for blowing engines, compressors, pumps, and other machines variously employed for manipulating gases and liquids, and has particular reference to certain improvements in the valve mechanism of Patent No. 1,012,359, ,granted to me'December 19, 1911.

The primary object herein is' to provide simple and efiicient means for so unitlng the valve and .the valve-actuating spring or springs as .to preclude independent movement ofieither of said parts, the secur ng means accurately defining the relatlve positions of the parts and permanently main taining them therein, and with independent movement forestalled, wear resultingv from friction developing movementkof one part on the other is avoided.

In practice, a coiled spring of plateform is found preferable to the coiled wire spring disclosed in my former patent, as it provides greater lateral rigidity, without however impairing the necessary flexibility and elastic ity longitudinally of the valve axis. Fure thermore, it is highlydesirable to prevent relative movementbetween the valve and that portion of. the spring or 'sprmgs to which the valve is secured, and as above indicated, itis to' the accomplishment of this purpose that the present invention is pri marily directed. In addition to the securing means, the invention includes certain improvements in the spring itself.

In the accompanying drawings, FigL1re 1 is a. vertical section of a one-sprlng valve for a blowing engine orcompressor constructed in accordance with the invention Fig. 2 is a plan view of thevalve proper; Fig. 3 is a like view of the valve-actuating spring, and Fig. 1 is a-plan-view of the valve and spring assembled. Figs; 5 and 6 are details on an enlarged scale, illustrating the interlocking connection between the extremity of the spring and the valve, and Figs. 7 and-8 are similarly enlarged views illustrating one of the intermediate connections, while Fig.9 is. a like view in detailof still another intermediate connection. Fig. 10

Application filed February 18, 1914. Serial No. 819,465.

a plan view of a valve and spring assembled,-

showing holding clips of different form, and v F g. 11 is asection, taken on line l1l1 of Fig. 10. Fig. 12 is a vertical section ofa multiple spring adaptation, the plane of section of the valve, being indicated by; line 12-42 of Fig. 13. Fig. 13 is a top plan of the valve and springs assembled.

Referring to the drawings, 2 designates the valve seat which in the form illustrated ismultiported at 3, the valve seat being fitted in head or wall 4 of the machine to which it is applied. Plate valve 5 is formed with the. inner and outer ring porf .ons 6 and complementary with the valve seat ports,

two ring portions being connected by the webs or bridges 8 which separate the segmental valve ports 9.1 It will be understood,- however, that the v lve and valve seat may be variously ported, the form here shown be ing only one of various adaptations,

In the present invention, as in my above mentioned'patent','the valve is spring sup:

ported and spring guided. The coiled spring 10 as here shown is of flat or plate form,

rather than of the spring-wire form illustrated in my former patent, the plate form providing greater lateral rigidity and holding the valve accurately positioned relative to the valve seat without in any way interfering with its flexibility and elasticity longitudinally of the valve axis.

For accurately and fixedly uniting the valve and spring, precluding relative movement of the parts in any direction, an end convolutiom of the spring, preferably the larger end, is secured by clips carried by the valve. In the adaptation of Figs. 1, 2 and 4, the clips 11' are formed separate from the valve and are spaced apart at positions A, B and C. Each clip consists of a shank portion 12'which is secured by welding or otherwise to a web or bridge 8 of the valve, the inner portion 13 of the clip being deflected at 14 to overhang the spring and to form a socket for receiving and confining the same. The nulnber of clips will vary in valves of difierent sizes, aswill be understood. The clips are disposed radially with relation to clips accurately positioned on the valve with only suflicient space beneath heads 13 forthe; spring, the latter is slipped into place and" is therebylat very accurately locatedf' i the valve center with their socket-forming bends facing inwardly as shown. Spring 10 is formed with much precision, and with the The outerperiphery of the end convolut1on of spring is formed with a shoulder or offset 15, and the extremity of this convo lution is beveled at 16. The springholding clips are so spaced that with shoulder beneath the clip at position A, the beveled.

. extremity'will be embraced by the clip at position B. \Vith the clip head 13at' position Ais bent or the spring thus located,

clipofi'sets 14. As the clip at position A holds the spring against rotation in one direction and the clip at position B against rotation in the opposite direction, it will be seen that the spring is positively secured and held. accurately positioned without possibility of displacement. The interlocking engagement of the clips with the. spring at positions A and B accomplish this quite regardless of the hold of any intermediately .pos'itioned'clips, although in practice the intermediate clip or clips here shown at one orK'more: positions C are also preferably caused to""interlock with thespring, the YQIflappingheads of these clips being upset are the surface depressions 19 formed in 'thespring,as iiidicated at 20, and such interlocking connection also tends .to force the spring backwardly or outwardly against the socket-like bend or bends 14.

In the adaptation of Figs. 10 and 11, the 'clipsare formed integral with the valve plate, being. struck up from the inner ring '6, as indicated at 21. Theinterlocking en- .gagementof these clips with the spring is the same as that above described.

ln the" arrangement shown in Fig. 1 wherein the valve, is supported and guided by a single spring, the smaller plate-like end portion 22 of the latter is apertured centrally at '23 to pass the securingbolt- 24, thereby clamping extremity portion 22 be-. tween the central portion 25 of seat 2 and the center of stopplate 26, the latter being properly spaced from the valve seat to permit of the necessary valve movement, the innerface ofthe stop being recessed at 27 to receive the contracted spring so that. thevalve will positively engage the stop. The webs or ribs 29 separating ports 28'co6perate in providing sufficient body for the spring end portion 22,. affording the neceswry strength and resisting lateral distorting the spring as indicated at 18, thereby.

spring convolutions peculiar to the spring shown and described in my former patent. Also in this adaptation as in that, the end convolutions of'the spring are parallel in any and all positions of the valve so that all portions of the seating face of the valve always bear the same relation to the seat. While the invention is not restricted in the size or number of convolutions with which the spring is formed, it preferably has at least one complete free convolution intermediate its secured end portions.

A plurality of supporting and guiding springs may be employed, particularly for relatively large valves, a desirable arrangement thereof being illustrated in Figs. 12 and 13. In the multiple s'p-ring construction, each spring is secured to the valve in the manner hereinbefore described and as clearly illustrated in Fig. 13, each spring being thus held positively and accurately fixed to the valve, the lateral rigidity of the several springs maintaining the valve inproper relation to the valve seat. In the adaptation shown, the spring-holding clips of the multiple spring arrangement are struck up from the valve plate, as shown at 21, the same as in the form illustrated in.

Figs. 10 and 11. Bolts 30 which secure the outer portion of the stop plate 26 to the valve seat may be utilized for securing the several springs of the multiple spring construction. Each of these bolts extends through a passage in a rib of the valve seat and through a corresponding hole in the valve, and the spring is clamped in depres sion 27. in the under face of the stop by means of a sleeve 31 on bolt 30 which rests in a depression in the valve seat face, all as cldarly shown in Fig. 12. Depression 27' provides ample space -for the contracted spring so that the valve may flatly engage the stop when open.

In each of the adaptations here shown the valve is carried and guided wholly by the coiled spring or springs, features characteristic of the construction. of my former patent, and as the improvements herein preclude independent movement of the spring or springs on the valve,., and vice versa, the

terlock with the projections of said devices and hold the valve and the portion of the spring secured thereto against relative movement in any direction.

2. The combination of a valve, a valve-actuating spring having surface irregularities, and holding devices upset into interlocking engagement with the surface irregularities for fixedly uniting the valve and sprin 3. The combination of a valve, a circular valve-actuating spring, and spaced holding devices on the valve and between which an end convolution of the spring fits and with said devices in interlocking engagement with the spring for fixedly uniting the valve and sprinm,

4-. The combination of a valve, spaced socket-forming holding devices on the valve, a cir cular spring entered in the sockets with portlons of the holding devices interlocking with the spring for holding the latter fixed in the sockets.

5 The combination of a valve, spaced socket-forming holding devices on the valve with the sockets facing the axial center of the valve, a circular valve-actuating spring entered in the sockets, and means providing interlocking connections between the hold-.

ing devices and-the spring for fixedly uniting the valve and spring. I

6. The combination of a valve, spaced socket-forming holding devices on the valve with the sockets facing the axial center of the valve, a coiled spring having an end convolution entered in the sockets, and

means forming interlocking connections between said devices and the spring for holding the end convolution of the spring again-st circumferential and radial movement relatively to the valve.

7. The combination of a valve, spaced socket-forming holding devices on the valve with the sockets facing the axial center of the valve, a coiled valve-actuating spring having an end convolution entered in the sockets with the holding devices overhanging said convolution and with the overhang ing portions upset into interlocking engagement with the spring for fixedly uniting the end convolution thereof and the valve.

8. The combination of a valve, a valveactuating coiled spring having an end convolution formed with an offset, a holding device on the valve with the spring offset engaging the holding device for preventing relative circumferential movement of the spring and valve in one direction, and another holding device on the valve and engaging said end convolution of the spring for preventing relative circumferential movement in the opposite direction.

9. The combinationof a valve, a valveactuating coiled spring having an end convolution formed with an offset, a holding device on the valve with the spring offset engaging the holding device for preventing relative circumferential movement of the spring and valve in one direction, and another holding device on the valve and constituting an abutment for the extremity of said end convolution for preventing relative circumferential movement in the opposite direction. r

10. The combination of a valve, a valveactuating coiled spring having an end convolution formed with an offset, a holding device on the valve with the spring offset engaging the holding device for preventing relative circumferential movement of the spring and valve in one direction, the extremity of said end convolution having a. beveled face, and another holding device on the valve and engaging said beveled face for exerting circumferential holding pres-- sure on the end convolution in the direction .of the abutment formed by the first named holding device.

11. The combination of a valve, a circular valve-actuating spring, and two springholding devices on the valve at the outer periphery of the spring and between which the spring is entered, one device holding the valve'against circumferential movement in one direction and the other holding it against circumferential movement in the opposite direction.

' 12. The combination of a valve, a coiled valve-actuating spring having an end convolution in engagement with the valve, and two spring-holding devices on the valve at the outer periphery of the spring and, respectively, exerting holding force on the valve in opposite directions-one maintaining the valve and spring against relative circumferential movement in one direction and the other maintaining the same against circumferential movement in the opposite direction.

13. The combination of a valve, a circular tapered valve-actuating spring having nesting convolutions and means projecting from the valve at the outer periphery, of the spring for holding the spring and valve against relative circumferential movement.

1d. The combination of a valve, a valve-11 5 actuating spring of coil form'having an end.

convolution in engagement with the valve,

of said devices engaging and confining the extremity of said end' convolution and another of said devices engaging the spring at a distance from said extremity,

16. The combination of a valve, a valve actuating spring of coil formation, and holding means located on the valve beyond the outer periphery of the spring and in interlocking engagement with the spring for holding it and the valve against relative circumferentiahmovement.

17 The co bination of a valve, a valveholding plate spring of coil form having an end convolution rectangular in cross-section and formed with surfaceirregularities, and holding devices on the valve at the outer periphery of the spring and adapted to engage said irregularities for maintaining the spring and valve against relative circumferential movement. 3

18. The combination of a valve, a valve actuating plate spring of coil form having an end convolution rectangular in cross-section, spaced socket-forming holding devices on the valve with thesockets facing the axial center of the valve, said end convolution of the spring entered in the sockets and the holding devices upset against said end convolution and holding the latter engaged with the back walls of the sockets.

19. The combination of a valve, a valve supporting and guiding plate spring of tapered coil form, means on the valve at the periphery of the spring and providing an immovable union between the valve and the larger end convolution of the spring, and supporting means to which the smaller end of the spring is secured. 1

20. The combination of a valve, a valve supporting and guiding plate spring of tapered coil form, means providing an imriphery of the spring and adapted to engage the latter for securing it to the valve.

22. A tapered coiled spring for actuating and guiding a valve for blowing engines, etc., the spring formed of thin fiat metal having nesting convolutions, the cross-section of the spring throughout its length being sufficient in direction at right angles to the springaxis to resist lateral deflection, one end convolution adapted to cooperate with a valve and the other end convolution with a support. 23. A tapered coiled spring for actuating and guiding a valve for blowing engines, etc, the spring formed of thin flat metal having nesting convolutions, the c1oss-s ection of the spring throughout its length being sufiicient in direction at right angles to the spring axis to resist lateral deflection, the larger end convolution adapted to be secured to a valve and the other end convolution to a support.

In testimony whereof I afiix my signature in presence of two witnesses.

LORENZ IVERSEN. 

